Help with a VERY DIFFICULT Query. Anyone up for the task?

Question

Hi, I have been struggling with this query for a week now and have made a little progress but not much: I apoligize for the long post but it needs explanation. Let me set up the question first.
I have a query that needs to run for a crystal report graph per supplier. This report is run ONCE per supplier(per record) and will return the current supplier's name, commodity(manufacturing part type) and index points(parts that have failures). It will also return all of the other suppliers with the same commodity, their index points, and a BLANK entry for their supplier name. The purpose of this is so that the supplier can see our companies ranking of suppliers by commodity, but should only know where they are ranked, not other suppliers. So in the bar graph legend, on the x-axis all you will see is a single label(the report's current record...supplier). Now for the table setup.
The query pulls from three tables:
1. VEN_LOC , master supplier table, includes all of our supplier's ID's(PK) and names
2. C_VENCOM , detached table, includes all of our supplier's ID's and commodity PK is (SupplierID,commodity)
3. QA_OCC , detached table, entries in this table are only inserted when there is a failure occurrence(index points). If a supplier does not have any failures during a specific date range (column OCCDATE) then there will be no records for that supplier in this table...this is where my problem comes from. Please read to end to understand problem.
Now for the query. Notice the union...the first part returns the current supplier's ID, name, commodity, and indexpoints. The second half of the query is what returns every other supplier with the same commodity, but returns '' for the supplier's name:
select supname,commodity,ip from(
select supname,commodity,ip from
(select v.name as supname, c.commodity, sum(q.indexpoints+q.lateindexpoints) as ip
from qa_occ q, c_vencom c, ven_loc v
where q.occdate between to_date('4/1/2006','mm/dd/yyyy')
and to_date('3/31/2007','mm/dd/yyyy')
and v.vendor='10063'
and v.vendor=c.vendor
and c.vendor=q.supplier
and v.ven_loc=c.pur_loc
and c.pur_loc=q.SUPPLIERLOC
group by v.name, c.commodity)
union
select '' as supname,commodity,ip from
(select v.name as supname, c.commodity, sum(q.indexpoints+q.lateindexpoints) as ip
from qa_occ q, c_vencom c, ven_loc v
where q.occdate between to_date('4/1/2006','mm/dd/yyyy')
and to_date('3/31/2007','mm/dd/yyyy')
and v.vendor<>'10063'
and v.vendor=c.vendor
and c.vendor=q.supplier
group by v.name, c.commodity)
order by commodity, ip desc) qa
where qa.commodity in (
select commodity from c_vencom
where vendor='10063')
group by commodity,supname,ip
order by commodity,supname,ip
This will return the following recordset:
SUPNAME      COMMODITY     IP
KF Corp.      FASTENER     63
     FASTENER     12
     FASTENER     33
     FASTENER     126
     FASTENER     153
KF Corp.      RUBBER      63
     RUBBER     12
     RUBBER      226
     RUBBER      259
This works like it should....
But... Here is where it gets really really tricky for me and the problem. Even if a supplier has no index points for a given date range, I still have to return a recordset with the supplier's name, commodity, and indexpoints of zero along with all other suppliers but names as ''.
So.. for example, one of our suppliers with ID# 10143 has no index points during the date range 4/1/2006-3/31/2007 so there are zero entries for this supplier in QA_OCC. Therefore the query returns only the other suppliers with this commodity but without 10143's suppliername, commodity, or index points of zero. so:
SUPNAME     COMMODITY     IP
     PLASTIC      12
     PLASTIC      45
     PLASTIC      51
     PLASTIC      78
When it should return no matter what:
SUPNAME     COMMODITY     IP
Emhart PLASTIC 0
     PLASTIC      12
     PLASTIC      45
     PLASTIC      51
     PLASTIC      78
Understand? If you need further info don't hesitate to e-mail me at [email protected]. Thank you.
Eric

Answer 1

Thanks but it doesnt change the results. Still not returning the supplier that has no records in QA_OCC..HOWEVER it is returning an extra result, still without name or 0 indexpoints though
SUPNAME     COMMODITY     IP
     PLASTIC     12
     PLASTIC     45
     PLASTIC     51
     PLASTIC     78
     PLASTIC     
select supname,commodity,ip from(
select supname,commodity,ip from
select v.name as supname, c.commodity, sum(q.indexpoints+q.lateindexpoints) as ip
from qa_occ q right outer join glovia_prod.c_vencom@gl7test c
on q.occdate between to_date('4/1/2006','mm/dd/yyyy')
and to_date ('3/31/2007','mm/dd/yyyy')
and c.vendor=q.supplier
join glovia_prod.ven_loc v on v.vendor=c.vendor
-- from qa_occ q, glovia_prod.c_vencom@gl7test c, glovia_prod.ven_loc v
--where q.occdate between to_date('4/1/2006','mm/dd/yyyy')
-- and to_date('3/31/2007','mm/dd/yyyy')
and v.vendor='10143'
-- and v.vendor=c.vendor
-- and c.vendor=q.supplier
and v.ven_loc=c.pur_loc
and c.pur_loc=q.SUPPLIERLOC
group by v.name, c.commodity)
union
select '' as supname,commodity,ip from
(select v.name as supname, c.commodity, sum(q.indexpoints+q.lateindexpoints) as ip
from qa_occ q right outer join glovia_prod.c_vencom@gl7test c
on q.occdate between to_date('4/1/2006','mm/dd/yyyy')
and to_date ('3/31/2007','mm/dd/yyyy')
and c.vendor=q.supplier
join glovia_prod.ven_loc v on v.vendor=c.vendor
and v.vendor<>'10143'
group by v.name, c.commodity)
order by commodity, ip desc) qa
where qa.commodity in (
select commodity from glovia_prod.c_vencom@gl7test
where vendor='10143')
group by commodity,supname,ip
order by commodity,supname,ip